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Published on 2010-03-24T06:45:20Z
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2010/03/24
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I'm just a newbie to ruby. I've seen a string method (String).hash .
For example, in irb, I've tried
>> "mgpyone".hash
returns
=> 144611910
how does this method works ?
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Ok I followed the steps for setting up ruby and rails on my Vista machine and I am having a problem connecting to the database.
Contents of database.yml
development:
adapter: sqlserver
database: APPS_SETUP
Host: WindowsVT06\SQLEXPRESS
Username: se
Password: paswd
Run rake db:migrate…
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My application requires to keep large data objects in session. There are like 3-4 data objects each created by parsing a csv containing 150 X 20 cells having strings of 3-4 characters.
My application shows this error- "marshal data too short".
I tried this-
Deleting the old session table.
Deleting…
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I don't know is it my mistake or no. So i have that code:
<code>
post '/singin/get_token' do
content_type :xml
puts request.body.read
puts xmlRequest
xmlRequest = REXML::Document.new(request.body.read)
...
</code>
And when i post something like that:
<code>
<?xml…
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reading around the various ruby install tutorials it's required to change path from /usr/bin/ruby to /usr/local/bin/ruby but i cant seem to be able to do it. Ultimately i want to install Ruby 1.9.2, should i uninstall 1.8.7 or what? i tried to install Ruby 1.9.2 with macports, the installation seemed…
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i am getting a strange bundler error when running
bundle pack
with bundler 0.9.12
any ideas? (see pastie for a better formatted code: http://pastie.org/881328 )
/opt/ruby-enterprise-1.8.7-2010.01/lib/ruby/site_ruby/1.8/rubygems/package/tar_input.rb:49:in `initialize': not in gzip format (Zlib::GzipFile::Error)
…
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I have an instance of dict with ints, floats, strings as keys, but the problem is when there are a as int and b as float, and float(a) == b, then their hash values are the same, and thats what I do NOT want to get because I need unique hash vales for this cases in order to get corresponding values…
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What property makes Hash table, Hash list and Hash tree different from each other? Which one is used when? When is table superior than tree.
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Hi, I would like to construct a hash table that looks up keys in sequences (strings) of bytes ranging from 1 to 15 bytes.
I would like to store an integer value, so I imagine an array for hashing would suffice. I'm having difficulty conceptualizing how to construct a hash function such that given…
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Theoretically does hashing a unique value yield a unique value?
Let's say I have a DB table with 2 columns: id and code. id is an auto-incrementing int and code is a varchar. If I do ...
$code = sha1($id);
... and then store $code into the same row as $id. Will my code column be unique as well…
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I attempted to install the perl module Net::Twitter::Role::API::Lists using WHM and after doing so my whole site came down. It seems that something that was updated with the install isn't functioning correctly and since our website it written in Perl none of our site scripts will run.
In almost 8…
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